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25 Cards in this Set
- Front
- Back
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Macrosmatic
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having a keen sense of smell that is important to their survival (animals)
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Microsmatic
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having a less keen sense of smell that is not crucial to their survival (humans)
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Detection Threshold
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the lowest concentration at which an odorant can be detected.
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Difference Threshold
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smallest difference in the concentration of two odors that can be detected
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Recognition Threshold
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the concentration at which quality can be recognized.
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dime-sized region located high in the nasal cavity that contains the receptors for olfaction. Located on the roof of the nasal cavity and just below the olfactory bulb.
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Olfactory Mucosa
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located in the mucosa. The cilia of these neurons contain the olfactory receptors.
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Olfactory Sensory Neurons
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a protein string that crosses the sensory neuron’s membrane seven times
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olfactory receptors
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a structure deep in the cortex that is involved in emotional responding
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amygdale
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Recognition Profile
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the pattern of firing of neurons that creates a smell perception
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Combinatorial Code for Odor
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– different odorants are coded by different combinations of olfactory receptors, but a particular olfactory receptor may participate in the code for many odorants.
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shaped like cones and are found over the entire surface of the tongue, giving it its rough appearance.
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Filiform Papillae
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shaped like mushrooms and found at the tip and sides of the tongue
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Fungiform Papillae
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a series of folds along the back of the tongue on the sides
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Foliate Papillae
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spaded like flat mounds surrounded by a trench, found at the back of the tongue.
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Circumvallate Papillae
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Chorda Tympani Nerve
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Nerve running from taste cells on the front and side of the tongue
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Glossopharyngeal Nerve
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Nerve running from the back of the tongue
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Superficial Petronasal Nerve
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Nerve running from the soft palette – the top of the mouth.
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Site of flavor perception.
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Orbital Frontal Cortex
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Distributed Coding
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Hypothesizes that quality is signaled by the pattern of activity distributed across many neurons.
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Specificity Coding
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Hypothesizes that quality is signaled by the activity in neurons that are tuned to respond to specific qualities.
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Route by which the odor stimuli from the food reaches the olfactory mucosa.
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Retronasal Route
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The passage that connects the oral and nasal cavities.
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Nasal Pharynx
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Neurons that respond to more than one sense.
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Bimodal Neurons
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Overall impression that we experience from the combination of nasal and oral stimulation.
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Flavor
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